XTRIM command in Redis is used to trim the length of a stream to a given maximum number of items. In Golang, this command is useful when you want to limit the memory footprint of your Redis streams, particularly in scenarios where you have a high volume of data flowing in but only need to maintain a certain window of recent activity.
Here's an example of how to use the
XTRIM command in Golang using the
In this example, we create a new Redis client connected to the local instance. We then use the
XTrimMaxLen method to trim the stream named "mystream" to a maximum length of 1000 entries. The result tells us how many entries were removed from the stream as part of the trimming process.
XTRIMcommand, be sure it aligns with your application's data retention policy and use case.
XTRIMwithout understanding its impact on data retention—once data is trimmed, it cannot be recovered.
Q: Is it possible to automatically trim a stream to a certain size on each insert?
A: Yes, you can use the
XADD command with the
MAXLEN option to automatically trim the stream every time a new entry is added. This is often more efficient than calling